Douglas Millican, Scottish Water’s chief executive,said: “This tap represents a real milestone in the campaign and shows our commitment to providing public water refill points in towns across Scotland.

“I would encourage local residents, workers and visitors to the town, to make full use of the tap year-round by topping up their reusable bottles when they’re out and about.”

The unit, which is connected to the mains water supply and inspected regularly, digitally tracks water usage and records savings of both cost and plastic.

A recent Scotland-wide study found almost two thirds of people now carry a refillable water bottle with them at least some of the time.

SNP MSP Ms Somerville, said: “Making the switch to a reusable water bottle is an excellent way to cut down on single-use plastic waste. With each refill, people can save money and help to protect the environment at the same time.”